Sewing machine



UNITED STATES PATENT OFFICE.

CHARLES LEYVY, OF NEXV YORK, N. Y ASSIGNOR TO JACOB KOHN, OF

SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,757, dated October29, 1889.

Application filed November 17, 1888- Serial No. 291,126. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES LEWY, of the city, county, and State of NewYork, have invented certain new and useful Improvements inSewing-Machines, of which the following is a specification.

This invention relates to an improved chainstitch sewing-machine whichis intended to be used by children as a toy sewing-machine, so as toenable them to do all kinds of sewing; and the invention consists of thecombination, with a supporting main standard having a yoke-shaped upperarm provided with a grooved head at one end and a fixed guide-rod at theother end, of a driving crankshaft which carries a loop-forming hook atone end and a crank at the opposite end, a yoke-shaped needle-barprovided with a guide-hook at one end and guide-eyes'at the oppositeend, and a connecting-rod pivoted to a crank of the driving shaft andthe needlebar.

The invention consists, further, of certain details of construction andcombination of parts, which will be fully described hereinafter, andfinally be pointed out in the claims.

In the accompanying drawings, Figure 1 represents a side elevation of myimproved sewing machine. Fig. 2 is aplan view of the same, and Figs. 3and 4 are respectively detail side elevations of the supporting main armand of the needle-bar of, the machine.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the main standard of my improvedsewing-machine, which is formed. of a curved upper part A, having anenlarged head a, an upright side portion A anda lowerpart A having abracket-shaped end a. The upper arm A and side portion A are of yokeshape and made in one integral casting with the lower bracket-arm A Thevertical side portion A supports on projecting lugs a a a stationaryguide-rod A, as shown clearly in Figs. 1 and 3. The lower bracket-arm Ais attached by a disk-shaped enlargement to a wooden or other base B,which is clam ped. or screwed to the table or other support, so as to berigidly held in position.

A driving crank-shaft C is supported in bearings 12 of the lower arm Asaid crankshaft carrying at the outer end below the table D, attached tothe bracket 0/, a rotary loop-forming hook E, while to the opposite enda crank E and crank-handle E are applied. A needle-bar F, made of yokeshape like the upper arm A is guided at one end by eyes f along theguide-rod A of the side por- 'tion A and at theopposite end, to whichthe needle is attached, by a hook-shaped guidepiece f in a guide-groovef in the head a of the upper arm A, as shown in Fig. 2.

The crank E of the driving-shaft O is connected by a pivot-rod c with apivot e, secured to a stud 6 cast integral with the needle-bar, so thatby rotating the driving-shaft C the crank A and the connecting-rod eimpart a vertically-reciprocating motion to the needle-bar F along theupper arm A. A bracket-plate 9, having an eye g, connects thereciprocating needle -bar F with a second guide-rod 9, supportedsidewise of the side portion A of the standard A, the rod 9 serving forsupporting a spiral spring 9 which assists in the upward motion of theneedlebar and equalizes the motion of the same in place of the flywheelgenerally used in sewing-machines. The upper arm A is further providedwith a vertically reciprocating presser-bar G, an eye for theneedle-thread, a lever for operating the presser-bar, and otheraccessories.

The sewing-machine is simple and inexpensive in construction, as themain parts can be made of cast metal and easily assembled. It

is operated by hand, enables children to do regular chain-stitch sewing,and serves them as a useful yet entertaining and instructive toysewing-machine.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. The combination of a supporting main standardhaving a yoke-shaped upper arm provided with a grooved head at one endand a fixed guide rod at the other end, a driving crank-shaft carryingthe loop forming hook at one end and a crank at the opposite end, ayoke-shaped needle-bar providedwith a guidebook at one end andguide-eyes at the opposite end, and a connecting-rod pivoted to thecrank of the driving-shaft and the needle-bar,

' substantially as set forth.

needle-bar and having a guide-eye, and a cushioning-spring applied to afixed guide-rod of the main arm, so as to assist in raising theneedle-bar, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

CHARLES LEWY.

Witnesses:

PAUL GOEPEL, CARL KARP.

